Improvement in carbureters



2 Sheets--Sheet1. O. P, DRAKE.

Improvement in Calrbureters.`

NO. 13];814. Patented Oct. 1,' 1872.

UWAMMMM; www-h:

2 Sheets--Sheet 2.

Y o. P. BRAKE.

lmprovment in Carbureters.

Patented Oct. I, 1872.

fg. al.

M www fw mmm .UNITED STATESm PATENTA OFFICE.

OLIVER P. BRAKE, 4OF BOSTON, MASSACHUSETTS.

f Specification forming part of Letters Patent No. 131,814, dated October 1, `1872.

To all whom it may concern:

Be it known that I, OLIVER P. DRAKE, of

l Boston, in the county of Suolk and State of Massachusetts, have invented certain new and useful Improvements on Air-Forcing Appara- 1 tus for the Manufacture of Illuminating Gras, and other purposes, of which the following is" a speciiication: Y

Nature and Objects of the Intention. The nature of my invention relates to improvements on rotary air-forcing apparatus said drum and guided over a spirally-grooved drum to a pair of blocks provided with a number of pulleys. A suitable Weight is hung to the lower block` and `constitutes the driving power for the operation of the pump. Also, in the arrangement and construction of skeleton frames having detachable supports. The case or receiver for the liquid is parted bej tween the skeleton frames, and one of the parts is provided with a suitable groove in which an elastic packing-ring is laid. The

\ other part of the receiver projects in the said1 groove and rests on the elastic packing-ring, whereby the receiver is made perfectly tight. The skeleton frames are held in place by rods projecting through ears on the frames. The

l rods are provided with nuts on their extreme ends, whereby the frames and receiver are screwed together and held firmly in place.

On the drawing, Figure 1 represents a ground plan 5 Fig.\2 represents a central longitudinal section over the line A B taken on Fig. l; Fig. 3 represents an end viewseen j from A on Fig. l; Fig. 4 represents an end view seen from B on Fig..1; Fig. 5 shows a cross-section on the line C D taken on Fig. 2 5 Fig. 6 is an enlarged cross-section over the -of the said delivery-disks it' it.

these perforations is to let in the air from the Y lineE Ftaken on Fig. 2 5 and Fig. 7 is an enlarged section of the joint on'the receiver.

Similar letters refer to similar parts wherever they occur on the drawing.

The `object of this my invention is to dispense with a regulating apparatus that is gen` erally used in connection with air-forcing apparatus of this kind, and for the above-named purposes.

aa' on the drawing are the skeleton frames, provided with hubs-b b', as shown. On the under side of each skeleton frame a a is cast a iiange, c c,'bolted to the supports d d by suitable bolts or screws, as shown. By this arrangement of having the supports d d detachable from the frames a a I am able to perform the engine-work to better advantage; also to pack for shipment in a smaller case and safer manner than if the supports were l permanently attached thereto. Through the hub b projects anV elbow-pipe, c, through which the air is forced from the air-pump. The inner'end of the pipe e serves as a bearing for the pump-shaft f. A suitable stuffingbox bearing, g, projects through the hub b and serves as a second bearing for the said shaft f. To the shaft f is attached the circular drum k, provided with disks i i 'i t, shown in Fig. 5, overlapping each other and otherwise constructed in the same manner as ordinary wetmeters are constructed, with the exception that I perforate the delivery-disks t' 'i i t with holes 7c la of any suitable shape, near 'the edges Theobject of chamberl gradually into the chamber opposite,

so as to equalize the pressure, instead of permitting the air to rush in through the whole width of the outlet-orice of the disks ifi t' 'ias soon as the said disks are moved out of the liq-A uid in which the drumh is partially immersed.

i it 'i answer all the purposes for a regulating apparatus, as so little air is gradually let in through them till the pressure is the same on bothsides of the disks fi t' t' t', by which the air is at all times forced very gently and evenly to the gas or other machine for which the pump is to be used. To the delivery-end ofthe drum h is attached au air-chamber, l, into which the air is forced and delivered from the disk-orices t i i t. The upper end of the elbow-pipe e projects in the air-chamber l a little above the surface of the liquid, as shown on Fig. 2, so that the air that is forcedinto the air-cham ber l may have a free exit through the said elbow-pipe e. The drum h revolves in a case or receiver, m m', made of sheet-brass, the ends of which rest loosely in the skeleton-frames a a. The receiver is made in two parts, m m', and joined together at n', as shown in Figs. 2 and 7. This water and air tight joint fn. consists of an annular groove made on the part my in which an elastic packing-ring, o, (Fig. 7,) is laid. The part m' projects in the annular groove on the part m, and rests against the elastic packin g-ring o. The frameset ttf, as well as the case m au', are firmly held together by means ofthe screw-bolts pp projecting through the ears p p attached to the frames a. a', and the nuts screwed over the ends of the bolts 19 p, as fully shown on the drawing. The for ward end of the case m is provided with an opening, q, through which the case may easily be filled with the liquid that is used in the receiver. A vent-hole, r, is also made in the same end, whereby the height of the liquid in the receiver may be known and adjusted. On the extreme rear end of the shaft g is keyed a ratchet-wheel, s, (Figs. 2 and 6,) provided on its outer end with a circular hub, over which the barrel t is made to move loosely when the rope is wound on the said barrel. 'The rear end u of the barrel t is supported at the center of the disk fu. The disk c is attached to the skeleton-frame a by means of the braces w 'w w, shown in Figs. l, 2, and 4. The barrel t is provided with a ilange, m, (Fig. 6,) to which is affixed a pair of pawls, y y, held in contact with the ratchet-wheel s by means of the coiled spring z attached to the pawls y y, as fully shown in Fig. 6, by which arrangement the rope may be wound on the barrel t without turning the shaft f and cylinder h;

but when the rope is unwound from the barrel t the pawls y y catch hold on the ratchet s, when the shaft f and cylinder It must move with the said barrel t. The rope l is attached to a suitable place on the barrel t, and guided onto the barrel over a spirally-grooved pulley, 2, that-is free to move in suitable bearings attached to the frame 3, or its equivalent. The pitch ot' the spiral cut on the face of the. pulley 2 is of about the size of the thickness of the rope that is used, so that the rope shall be evenly and spirally guided on the barrel t when it is wound on it or unwound, asthe case may be. The rope l is carried from the spiral drum 2 to a pair of multiplied blocks, 4 5, containing each a number of grooved pulleys, as

shown, by which arrangement I dispense with the gearings commonly used on similar machines. The upper block et is hung and attached to the frame 3, and to the lower block 5 is attached a suitable weight, 6, that consti tutes the motive power for the air-forcing apparatus.

Having thus fully described the nature, construction, and operation of my invention, I

wish to secure by Letters Patent and claiml. The apertures k k, of any suitable form and shape, one or more, near the deliveryedges of the exhaust-disks on rotary air-forcing apparatus, for the purpose of regulating the even flow of the air or gas, as herein fully shown and described.

2. In combination with the barrel t and the blocks 4 5, with its weight 6, of the spirallygrooved guiding-pulley 2, as and for the purpose set forth.

3. The construction and arrangement ofthe sheet-metal casings m m', resting in therecessed skeleton frames a a, provided with a packing at u, and held together by means of the longitudinal screw-boltsp p19 p going through ears on the frames al a, in a manner and for the purpose as herein set forth and described.

- OLIVER l?. DRAKE.

Witnesses:

ALBAN ANDRN, GEORGE E. PHELrs. 

